CCC 887

Neighboring particular Churches who share the same culture form ecclesiastical provinces or larger groupings called patriarchates or regions.⁴¹³ Cf. Apostolic Constitutions 34. The bishops of these groupings can meet in synods or provincial councils. "In a like fashion, the episcopal conferences at the present time are in a position to contribute in many and fruitful ways to the concrete realization of the collegiate spirit."⁴¹⁴ LG 23 # 3.